常見例句Digraphs have a simple pictorial representation.有向圖有簡單的圖形表示。Using matrix theory, we present a sharp upper bound on the spectral radius of digraphs and strongly connected diagraphs.摘要利用矩陣理論，給出了簡單有向圖的譜半徑可達上界和強連通有向圖的譜半徑上界。 返回 digraphs